Tray-making machine



Apr. 17, 1923. I 1,452,346

1 F. E. KUSTER TRAY MAKING MACHINE Original. Filed May 4, 1920 8 Sheets-Sheet 1 TRAY MAKING MACHINE Original Filed May 4, 1920 8 Sheets-Sheet 2 Frederick E KM/5'26? F. E. KUSTER TRAY MAKING MACHINE Original Filed May 4, 1920 8 sheets sheet' 5 Frederiaia Emm- Apr. 17, 1923.

W. I. m. w F.

Apr. 17, 1923. 1,452,346

- F. E. KUSTER TRAY MAKING MACHINE Original Filed May 4, 1920 1 8 sheets-sheet 6 11 W a??? W I t "76/ H I i I 1 l l jrvuen$oz 8 Sheets-Sheet 7 Fmde rick .E'Ji'zgfier F. E. KUSTER TRAY MAKING MACHINE Original Filed May 4, 1920 Apr. 17, 1923.

F. E. KUSTER TRAY MAKING MACHINE Apr. 17, 1 923.

8 SheetsSheet 8 Original Filed May 4, 1920 6 H 01 way,

Patented Apr. 17, 1923.

insane UNETEE STATES PATENT QFFEQFL.

FREDERICK E. KUSTEB, OF EVANS VILLE, INDIANA; CHARLES E. KUSTER ADMINIS- TEA'IOR OF SAID FREDERICK E. KUSTEBI, DECEASED.

TRAY-MAKING MACHINE.

Original application filed May 4, 1920, Serial No. 378,793. Divided. and this application filed November 26, 1921. Serial No; 517,891;

T 0 all whomit may concern:

- Be it known that I, FREDERICK E. KUSTER, a citizen of the United States, residing at Evansville, in the county of Vanderburg and State of Indiana, have invented certain new and useful Improvements in Tray-Making Machines, of which the following is a specification.

This invention relates to certain new and useful improvements in machines for making traysor what are known to the trade as butter, lard or. pickle dishes and the like, and to mechanism for tinning'the top edges of the sides thereof. This application is a division of my application Serial No. 378,- 793. filed May t, 1920. I i i 'The present invention has forits object among others to provide an improved simplified machine, accurate and reliable in its functions, positive in its action and adapted to be run without the employment of skilled labor and also capable of turning out a greater number of trays in a given time.

The present invention has for a further object to provide novel means for creasing or'scoring the blank and giving a deeper cut at predetermined places so as to enable the blank to morereadily fold, and to avoid undue bulk or thickness at the points of fold.

Iaim further at improvements in the details of construction of the mechanism for accomplishing the above ends.

Other objects and advantages of the invention will hereinafter appear and the novel features thereof. will be particularly pointed out in the appended claims.

The invention, in its preferred form, is clearly illustrated in the accompanying drawings, which, with the numerals of reference marked thereon, form apart of this specification, and in which- Figure 1 is a side elevation of a tray-forming and tinning machine constructed in accordance with my present invention.

Figure 2 is a front end view of the same;

Figure 3 is a vertical longitudinal section approximately on the line 3--3of Figure 2.

Figure at is an enlarged detail, partly in section and partly in elevation, of the'strip feed and cutting mechanism.

Figure 5 is an enlarged detail perspective view of the cutting mechanism with portions former Figure 8 is a detail view in elevation with the material forming the tray in section,

showing the clamps about to be engaged to affix the tin to the edges of the tray.

Figure 9 is a detail showing theposition of theparts when the clamps have been closed and the tin affixed.

' FigurelO is a bottom plan view of the upper die employed forforming the creases and cuts in the blank.

Figure 11 is a vertical section on, the line 11-11 of Figure 10, looking in the direction of the arrow.

Figure 12 is a top plan'view of the bottom die employedinconnection with'the die shown in Figure 10. i

Figure13 is a section on the line 1313 of Figure 12, looking in the direction of the arrow.

Figure 1 1 is a detailshowing the means for making the deeper crease or out at the corners of the blank. Y

Figure 15 is a detail of the slidable' boxing carried by the side members which carry the scoring knives. j

' Like numerals of reference indicate like parts throughout, the different :vicws.

Referring to the drawings, I p 1, designates a suitable base or frame adapted ,to' provide suitable support and bearings for the different shafts and moveble parts of the machine and adapted to support certain of the operative parts in suitably elevated positions 2- is the main driving shaft mounted suitable bearings in the said frame or base, andderiving its power from any suitable sourcc,3 being the drive pulley on said shaft, and l a hand wheel by which the shaft may be turned by hand when occasion may require.

On the main drive shaft 2 is a small gear 5 which mesl'ies with a large gear 6 on a shaft 7 mounted in suitable bearings and upon which is carried the small gear 8,

which meshes with the large gear 9, upon the transverse stud or stub shaft mounted in the inclined member 11 of the frame 1,

and upon this stub shaft 10 is a gear 12,

the said gears 9 and 12 being fastened to move together and both being loose on the stub shaft 10.

13 is a gear carried loosely on the stud. or stub shaft 1 1 which is supported on the member 11 of the frame and which gear 13 in turn meshes with the gear 15 on the shaft 16 mounted in suitable hearings on the frame 1 and upon this last-named shaft (16) is a sprocket wheel 17, for a purpose hereinafter set forth.

18 is a gear meshing with the gear 15 on the shaft 16, this gear 18 being carried by the stud or stub shaft 19 supported in the member 11 of the frame, and the said gear 18, in turn, meshes with a gear 2U on a shaft 21 mounted. in suitable bearings in the frame 1 and this last-named gear, in turn, meshes with the gear 22 on the shaft 23, mounted in suitable bearings on the frame 1 and carrying the feed roller 2 1, see F igure The shaft e3 carrying the feed roller 24: is mounted in a vertically ad justable box 25, of known construction, for a well-known purpose. 2G is the lower feed roller cooperating with the feed roller 24, as seen in Figure 8.

27 isa sprocket chain passing around the sprocket wheel 17 and around the sprocket wheel 28 carried by the shaft 29 mounted in suitable hearings in the frame 1 and carrying the lower feed roller 30, as seen best in Figure 3, which feed roller cooperates with the upper feed roller 31 on the shaft 821 mounted in a vertically adjustable boxing 33, as seen in Figure 3, for the well-known purpose, there being nothing novel claimed in the boxing, and hence a further detailed description thereof is deemed unnecessary.

34 is a gear on the shaft 29, meshingfwith a gear 35 on the shaft 32, as seen by'dotted lines in Figure 3, it being understood that the gearing between the shafts of the upper and lower feed rollers 30 and 31 is located upon the side of the machine opposite the gearing between the upper and lower feed rollers 24.- and 26, as will be readily understood upon reference to Figures 1 and By this means the paper or material from which the tray or dish is formed is fed, such paper 36 being fed from a roll in the usual manner, said roll being supported in close proximity to or at a distance from the machine as may be most expedient. The paper in its passage through the feed rolls is guided between guides 3'7 and upon opposite sides of the table or top portion 39 of the frame. 40 is a vertically disposed strip or member serving a further guide to the edge of the paper to take care of the buckling of the paper between the feed rolls.

The primary food rolls Q-l and 26 are revolved continuously. The second set of feed rolls 30 and are revolved continuously but feed intermittently, for a purpose which will hereinafter appear. For this purpose the upper feed roll 31 is raised at intervals, and this is accomplished through the medium of the pendent member or hanger 41 mounted at its upper end on the shaft 32 and at its lower end connected, as at 42, with the short arm 13 of a lever fulcrumed at 44, the long arm of which extends rearward of the machine, as seen best in Figure '1, Where it is designed to be engaged by a screw or the like 46 adjustably mounted in a lug or the like 47 projecting from the vertically reciprocatory member 48 which carries the knife for creasing and scoring the" paper. The member 41 is rendered adjustable in length by suitable means, such as a turn buckle, seen in Figure 1. Downward movement of the member 1-8, bringing the screw 46 into engagement with the free end of the long arm of the lever causes the elevation of the feed roller 31 for a purpose which will be explained. as the description proceeds.

The member -18 is guided in its vertical movementsbetween guides 50 which may be of the ordinary dove-tail form or of any approveiil form which will serve to maintain rectilinear relation between the parts and cause the member 48 to at all times move in a predetermined path.

The shaft 7 is mounted in suitable bearings in the frame 1, and as a means for reciprocating the member 48, and the knives movable therewith, this shaft is provided at each end with eccentrically arranged pins or portions 51. This shaft is reduced in diameter at the end, as seen in Figure 1, to carry the gear, but the pins or eccentric portions 51 are of less diameter than the shaft proper, although integral therewith, and are adapted to rotate in blocks 52, one at eachside of the machine, which blocks are, in turn, adapted to reciprocate horizontally in the lower ends of the vertically rcciprocatory side members 52 of the member 48, as will be readily understood. upon reference to Figure 1.. As will be seen in said Figure l, the space is provided to allow of the horizontal reciprocatioi'i of said blocks or boxes, thus, throughthe medium of the eccentric portions of the shaft 7 and the blocks, the rotation of the shaft 7 is converted into an even and smooth up and down motion or vertical rcci n'ocation of the side members of the member 48 which carry the knives for scoring or creasing and cutting the blanks from which the tray is formed.

The upper and lower dies carrying the Inc (ill

knives for scoring and cutting the paper are carried by the side'members of the member 418, these being disposed therebetween and bolted thereto and to the frame, as will now be explained. 54 is the lower die shown in top plan. in Figure 12 and in vertical section in Figure 13. It is provided with the knife 55 secured thereto in any suitable manner, as by bolts'56, see Figures 3, 12' and 18.' This lower die rests upon the table 57 having the depending side portions 58, which, in turn, rest upon the member 59 which is bolted by suitable bolts or the like GO'to the adjacent sidemembers 6161 of the frame 1, as shown clearly in Figure 3. This member 59 is provided with the strengthening rib 62, as shownin Figure 3.

The top face of the bottom die 54; is provided with grooves or depressions 63, see Figures 12 and 13,which co-operate with the corresponding scoring or creasing knives carried by the upper die, these being of wellknown construction and mode of operation to score or crease the blanks from which the tray is formed. These scoring or creasing knives score or crease the paper to form the,

bottom and the sides and ends of the tray, as will be readily understood from Figure 12, and the corners of the blank are also cut by means of the male and female dies or punch, as seen at 64 and 65, in Figures 10 and 12.

In order to cut the paper between the'score lines at the corners of the blank, I provide the angularly-disposed knives 66which are made adjustable vertically by suitable means, as the rods 67, screw-threaded, as seen at 68, and engaging threaded openingsinthe top member 69 of the "Vertically-movable knifecarrier. 48, this top member being bolted to the upper portions of the side members 52, as seen at 70, the'said top member being arched for strength, as shown at 71, this arched portion beingshown as provided with a hole 72 to facilitate its being handled. The top portion 69 rests upon a plate 73 having they depending skirt portion 74: terminating in the base portion 75, to which is secured, in any suitable manner, the upper knife 76, for cooperation with the lower knife 55, as will be readily understood by reference to Figure The rods 67 pass through the members 73 and 7 5 and their lower ends bear upon the cutting knives. 66 so that they may be forced downward as occasion may require. These knives, as well as the scoring or creasing knives 77 are held in place by means ofthe wedges 7 8 at the corners and the wedges 79 and'SO at the ends, as seen clearly in Figure 10. The center block 81 is stationary and the side blocks 8:2 are adjustable with relation thereto, as will be readily understood by reference to Figure 10, so that the scoring and cutting knives that act upon the paper blank to score and cut the same are firmly held in predetermined relative position. The

, described.

members-79 and 80 are clamped in position bymeans of the screws or bolts 83, as seen in Figures 10 and 11, which are adpistable in the said blocks and pass through the manner similar to that in which the end blocks or members 7 9 and 80 aresecured, all aswill be readily understood from Figure 10.

The male dies or punches 64k are held in place by means of the vertical bolts 88, as seen in Figure 10, secured in the flanges 89, and are held in adjusted position and firmly in place by means of the set bolts 90 screwed into the plates 91 secured to the flanges 89 by suitable means, as the screws or bolts 92, as seen in Figure 14. a

98 and 9.4 are the strippers whichs'erve to strip the paper off of the knivesafter they have served their functions in scoring and cutting the sa d paper to form the blank.

Eaeh stripper is'mounted for vertical movement, as seen in Figure 11, being held or forced downward bycmeansof a spring 95 around the rod 96 which [carries the stripper, as seen in Figure 11, the strippers being shown in their, lowermost position in Figure 11, being shownin thepositionthey assume afterhaving pushed the paper off of the knives. v p I 1 V 97 is a presser foot "adapted to bear upon the paper tostop the forward movement of the paper when the feed roller 31 is moved upward out of contact with the paper by means of the downward movement of the 'membertS and the depression of the free end of the arm 4L5 of'the lever hereinbefore- This presser foot is carried by the rod 98 which is vertically movablefand is guided in 1ts movements by the upper and with the member 48, a suitable spring 101 during thedownward movement of the memher-+5118 is released and as soon'as the upper gu de '99 engages'the nuts 103 on the upper end of the rod 98 the presse'r. foot is lifted from its engagement with the paper.

The parts are sotimed in their movements that as soon as the presser foot 97 is moved up out of. contact with the paper, the upper feed roller 31 is brought back to its lowermost position and again contacts with the no lower guide members 99 and 100 mova ble around thesaid rod and bearing at its upper I end against the lowerface of the upper guide -member 99 and at its lower end against a i after the first scored blank has been severed from the strip.

The shaping or forming mechanism is shown in Figures 1, 2 and 3, to which attention is now directed. In Figure 3 the severed blank is shown at 104. After being severed from the strip by the knife 76, it may be supported by suitable guides in position to be acted upon by the plunger, or it may be allowed to drop upon the plunger which is so timed in its movements as to rise to position to receive the said severed blank as it is cut by the said knife. The die or plunger is mounted for vertical movement, by

means soon to be described, while 106 is the primary former which is designed to first fold the sides of the tray or blank over the said form or plunger 105,107 being the former which acts to afterwards fold the ends of the tray or blank over the said form or plunger 105, the said member 107 being de-.

signed to also form the folds at the corners, in a manner well-known and understood in this character of machine. The two members 105 and 1.07 are movable independently of each other, the one being carried by a stem or rod 108 slidable within the sleeve 109 which, in turn, is slidable within the sleeve or hearing 110 mounted on the yoke 111, as seen at 112, which yoke is secured to the top of the frame of the machine. as shown at 113. The s'leeve109 is provided with nuts 114, while the'stem or rod 108 is .provided with the adjusting and lock nuts 1.15. as seen in Figure 11.6 is a bar secured to the outer end of the stem 108 by means of a bolt 117, the ends of this bar being shown as hooked to engage the ends of springs 118, the other ends of which are secured in any suitable manner, as at 1.19. to the hearing 110, as indicated by dotted lines in Figure2.

The plunger 105 is reciprocated in the fol lowing manner. Un the shaft '4' is an eccentric within the eccentric band 121, the latter being provided with a lug 1.22. as seen best in Figure 3. to which is pivotallv connected. one end of the link 12 as at 124, the other end of said link 123 being; loosely mounted on a shaft 125 mounted on or in suitable bearings .126 on the frame 1.. The eccentric band 121, is provided at a point/dim metrically opposite the lug 122 with a lug: 127 to which is pivotally connected, as at 128. one end of a link 129, the other end of which is pivotally connected. as at 130, with the plunger stem 131, seeFigures 2 and 3,

movable in a suitable guide 132, see Figure 2.

The mechanism for supplyin and applyh ing the tin to the upper edges of the tray after itis formed will now be described.

133 is a reel carried on a shaft 134 mounted in suitable bearings 1235 supported from the frame 10f the machine, as seen clearly in Figures 1, 2, 3 and 4, there being two of these reels, as seen clearly in Figure 2, and these are spaced apart according to the width of the tray so that'the tin shall be supplied in proper alinement with the opposite side edges of such tray. The tin 136. of requisite width, is wound upon these reels and is unwound therefrom required for use during the operation of the machine. These strips of tin pass over a curved spring guide mem her 137, seen best in F igures 3 and 4, projecting from the rear end of the machine and after passing: over these guides pass between the upper and lower feed rollers 13S and 139, see Figures 3 and 4, and by meansof these feed rollers these strips of tin are fed into proper position to be applied to the top edges of the tray and to he severed by means soon to be described.

p The lower feed roller is operated through the medium of an arm having; at one end an elongated slot 141 in which is received the shaft 142 mounted in suitable hearings in the frame, the other end of the arm 1.40 beinp,- pivotally connected, as at 143, to the end of a link 144 the other end of which is loosely mounted upon the shaft 145, mounted in suitable hearings in the frame, to' which shaft is keyed or otherwise fastened a ratchet 146, see Figure 4, with which engages a pawl 147 pivotally mounted, as at 148, onthe link 144, 149 being a spring acting on said pawl to holditto its work. The upper roller 138 is carried by the shaft 150 spring pressed to its work by means of a spring;- 151. as shown in Figure 4. The lower end. of the. arm 140 has connected thereto, as at 152, one vend of a spring 158, the other end of which isconnected, as at 154, with a portion of the frame 1, as seen best in Figure 4. Fast upon the shaft 142 is a cam whichis adaptedfor eo-,

operation with a roller 156 carried bythe arm 140, all as shown clearly in Figure 4. is a large cam fast upon the shaft 142 adapted to revolve in the direc-tion of the arrow, seen in Figure 4, and this cam 157 ,isdesigned for cooperation with a roller servin to normall hold the 'aws 0 en or a 3 distended, asshown in Figures 6 and 7.

The inner face of one of these jaws is pro- .vided'with teats or projections 169 andthe other jaw is provided with cooperating depressions 170 whereby as the jaws are brought together upon the tin, afterthe lat ter has been bent, the tin is punched or pressed into the sides of the tray. The opposing faces of these jaws are also provided with longitudinally disposed slots or guides 171 in which the tin strip 136 is retained when it is first supplied thereto. Figure '6 shows the tin strip held within the guides or recesses 171 in the jaws 165 and 166 ready to be operated upon by the knife and creaser which serves to bend the strip of tin between said jaws. The creaser 172 comprises a substantially V-shaped member of substantially the same length as the jaws 165 and 166, as seen in Figure 5, and at one end thereof is carried the knife 173 which serves to sever the tin strip after it is placed in position in the jaws, asseeii in Figure .6, and acting to sever such tin strip just before the creaser 172 acts upon said strip to bend the same. The member 172 and its knife 173, it being understood that there is one for each tin strip and its applying mechanism, is carried by an arm 17a pivotally mounted, as, at 175, upon a bracket 17 6 mounted on the frame 1, these two arms being shown clearly in Figure 2. Each arm is actuated through the medium of an arm 177 looselymounted upon the shaft 142, see Figures 1 and 2, said arm being bent, as shown in Figure 1., and provided with an elongatedv slot 178 for an evident purpose. 179 is a spring connecting one end of this arm witha suitable member of the frame 1, as seen clearly in Figures 1 and 2. The arms 174 [work through vertical slides 180 in the frame 1, as seen clearly in Figure 1.

181 is a roller on the arm 177 engaged by the cam 182 fast on the shaft 142,.as seen.

in Figuresl and 2, whereby the oscillatory motion is given to the arm 174, as will be evident. f i i The cam 182 is provided with an interior cam track 183, as shown by dotted linesin Figure 3, upon which is designed to travel a roller 184: projecting laterally from the guide member 185, tothe upper end of which is pivotally connected, as at 186, the lower end of the rod 187 which is adjustable as to length by suitable means, as a turnbuckle 188, its upper end being pivotally connected, as at 189, with the crank arm 190 keyedon the rook shaft 191 mounted to fixed bearings 192 on the upper part of the frame, as seen best iniFigure 1, and fast on this shaft 190 is the crank arm 193, the other end of whichis pivotally connected, as at 1941, with the lower end of a link 195, the upper end of which is pivotally connected, as at 196, with the upper end of the sliding rod 197, the lower end of which is shown as rounded, as at 198, so as to have a rolling contact or engagement with one of the jaws of the tin clampingmeans, as seen in Figure 9. As seen in Figure 2, this mecha nism is duplicated, one being upon each side of the machine, and the two adapted to be operated simultaneously, so as to clamp the I two tin strips upon the two sides of the tray at the same time. The members 197 are movable in suitable guides 199. Figure 9 shows the manner in which these members 197 operate to close the jaws 165 and 166 against the tin strips to clamp the same over the upper edges of the sides of the tray. Figure 6 shows the strip of tin in the jaws 165 and 166being held in the recesses 171 and ready to be acted upon by the member 172 and the knife 173. Figure 8 shows the position of the tin strip just. after the member 172 has acted thereupon to bend the same in the jaws, having forced the edges of the tin strip from the recesses 171, and the parts are ready for the opera-, tion ofthe members 197 to close the jaws. and clamp the tin upon the edges of the sides of the tray, this having been done in Figure 9. s

As seenin Figure 5, the knife 173 operates in conjunction with the fixed knife 200 seat ed in a recess in the upper face of the top of the frame and over which the tin .strip is fed. Over this fixed knife is a transverse plate or strip 201 beneath which the tin strip is fed, as seen in Figure 5. This strip 1 The shaft 1412 is revolved by means ofthe ,2

gear 202 fast thereon and meshing with a gear 203 fast on the shaft 7 as seen in Figure 1. From the shaft 142 I operate pickers that are designed to pick the completed trays from the plunger 105 and throw them out of the machine. These pickers 204 are carried by the arms fast on a shaft 206 mounted in suitable bearings, the said arms being in this instance as offset, as at 207, to clear other parts of the machine. The shaft 206 is rocked by means of an eccentric 208 on the shaft 142 and connected by a vertical rod 209with a crank arm 210, so'that the shaft 206 is rocked and the pickers given an oscillatory or swinging motion, to engage the completed trays and remove them from the machine at the rear end thereof.

Any suitable form of clutch mechanism may be employed for throwing the machine into and out of operation.

ll' ith the parts constructed and arranged substantially as hereinbefore described, and with the reels containing the stripsof tin in position, and the reel containing-the paper from which the tray is made properly positioned, the paper 36 is fed in at the front of the machine between the feed rollers 2t and 26, as seen clearly in Figures 1 and 2, being fed between the guides and forward between the rollers and 31, and the strips of tin 136 fed between their rollers 138 and 139. The machine is now started; the forward end of the paper is held by the presser foot 91', the paper continues to be fed, but being held by the presser foot 97 it buckles between the primary and secondary set of feed rolls. When the pre'sser foot 97 is down upon the paper, the upper feed roll 31 is lifted out'oi contact with such paper by reason of the arm 15 being depressed by the engagement of the pin -16 therewith. lVhen the presser foot 97 is raised by the upward movement of the member 418, the roller 31 drops to feeding-position, and the paper is fed overthe lower die 54- and in the continued movement of the machine the member d8 is moved downward creasing and cutting the paper of which the tray is formed, it being understood that the presser foot 97 is moved downward with the scoring knife and the paper is held by such presser foot during the scoring and cutting operation. in the continued movement of the parts, the presser foot 97 is raised, the roller 2-11 is lowered and the paper thus scored is moved forward onto the guides or in positionto rest upon the plunger 105 and in the next downward movement of the member 418 the blank is severed from the paper strip by means of the knife 76 cooperating with the knife 55, as will be readily understood upon reference to Figure 3. The blank 10 1 is, at this time, deposited in position to be operated on by the plunger 105 which is now moved upward through the medium of the means hereinbefore described,

the sides of the'tray being first formed down by the former 106, and in the further upward movement of the plunger 105 the formers 107 come into operation to fold down the ends of the blank and the folds at the corners. The formed tray is now upon the former 105, as seen in Figures 8 and 9. During this operation the strips of tin 136 which have been fed forward into the jaws 165 and 166, as seen in Figures 5 and 6, with the edges thereof retained in the recesses 171 of said jaws. are cut off and bent or formed into the shape shown. in Figure 8-, by the knife 173 and the former 172. By this operation the edges of the strips of tin are forced out of therecesses 171 and they appear as in Figure 8. The members 161 carrying the jaws, have, in the meantime, been raised by the mechanism hereinbefore described. Just at the moment that the plunger 105 reaches its highest stroke, the members 161 carrying the jaws 165 and 166, are brought to their highest point and then the members 197 are forced against the jaws 165 and the said jaws are forced toward the jaws 166, the free ends of which are backed upby the plunger 105, and thus pressure or blow of the members 197 forces the tin strips in close contact with the edges of the sides of the tray and at the same time the punches 169 are forced into the tin strips, and paper so as to securely fasten the strips to the paper. The parts then start on their return movement, the members'197 being moved upward and away from the jaws when the latter are forced open by their springs and the parts return to their normal positions and the same cycle of operation is repeated as long as the machine is running.

The aws 165 and 166 are prevented from opening beyond a predetermined point by means of the lugs 165 and 166 on the under side of said jaws, as seen in Figure 6.

In order that the portions of the tin between the fold lines upon the sides of the tray may be forced inward or indented along such lines, the jaws 165 are provided with a projection 165 upon its inner face, the ends thereof being upon the same angular lines as the lines of fold at said sides, this line of fold being along the line of the paper that is cut by the knives 66. I

As the plunger descends, the completed trays with their side edges tinned are automatically picked off by the pickers 204, one upon each side of each tray, and the trays thrown rearward from the machine.

The parts are so timed with relation to each other that each step of the operation follows in proper sequence so that the machine runs without delay and as long as the'machine is running the trays are continuously formed, tinned and thrown out of the machine.

From the foregoing, it will be seen that I have devised a complete and efficient machine for forming and tinning trays and automatically removing them from the machine, and, While the structural embodiment of the invention as herein disclosed is what I at the present time consider preferable, it is evident that the same is subject to changes, variations and modifications in detail, proportion of parts, etc., without departing from the spirit ofthe invention or sacrificing any of its advantages. I, therefore, do not intend to restrict myself to the if details of construction, proportion of parts,

etc, as hereinbefore disclosed, but reserve the right to make such changes, variations and modifications as come properly within the scope of the protection prayed.

What is claimed as new is 1. In a tray-forming machine, cooperating organized means for scoring a blank, shaping the tray, and applying a reinforce over the edges of the sides of thetray, the

same embodying a plunger and inclined re ciprocatory members cooperating with said plunger to strike against the reinforcing embodying a plunger and inclined recipro oatory members cooperating with said plunger to strike against the reinforcing elements to press the same against said sides.

In a tray machine, cooperating organized means for scoring a blank, shaping the tray, reinforcing the edges and ejecting the completed tray, all in a continuous operation, the same embodying a plunger and inclined reciprocato-ry members cooperating with said plungerto strikeagainst the reinforcing elements to press the same against said sides. i

5. In a tray machine, cooperating organized means for scoring a blank, cutting the material deeper than the scoring along a OIIS line of fold, shaping the tray, and reinforcing the edges thereof all in a single continu= operation, the same embodying a plunger and inclined reciprocatory members cooperating with said plunger to strike against the reinforcing elements to press the same against said sides.

6. In a tray machine, cooperating organized means for scoring and shaping the blank, reinforcing the edges, and automatically ejecting the completed tray, all timedfor successive operation, the same embodying a plunger and inclined reciprocatory members cooperating with said plunger to strike against'the reinforcing elements to press the same against said sides. i

7 In a tray machine, cooperating organized means for forming and shaping the blank, a plunger, reciprocatory means for applying a reinforce to the edges ofthe sides of the tray, and inclined reciprocatory means arranged to strike. the .reinforcea blow for clamping the tin in position on such edges. I

8. In a tray machine, the combination with a means for forming a tray and oppositely-inclined reciprocatory members for applying reinforcements to the edges thereof, of oscillatory pickers one upon each side of a' tray for ejecting the completed tray from the machine.

9. In a tray machine, the combination with means for forming atray and oppositely inclined vreciprocatory members to strike a blow for applying metal reinforce ments 'to the edges thereof, of oscillatory pickers one upon each side of a tray for ejecting the completed tray from the machine, and properly timed cam means for operating said pickers.

In testimony whereof I afiix mysignature. I

i FREDERICKE. KUSTER. 

